Something I figured out yesterday that is a pretty solid trick for those of you on logic. Basically, I started with a bassline in massive, and then used the bounce in place feature to bounce it to a new audio track. One of the options for bounce in place is to bounce the new audio to a selected track. So after bouncing the bassline down the first time (to a new track), I right click on the new audio region and pack it in to a take folder. Then, I go back into massive and adjust the LFO rate to something new and bounce it down again. FROM NOW ON every time I bounce down the bassline at a new rate, I first select the new audio track that the take folder is on, and then choose the "selected track" option under "destination" in the "bounce in place" menu. This way, you can have tons of different "takes" of your bassline, with different LFO rates, different notes, single notes at different LFO rates, and so on, ALL within a single take folder. From there you can use quick swipe comping to quickly comp together a pretty sweet bassline. I take it one step further and chop up the take folder, placing different parts on different audio tracks with different FX, which you could also kind of do by going back in to massive or your synth of choice and making some changes in there, and then bouncing the bassline down into that comp folder, and comping a take that way.
Not exactly sure how to get screenshots in to this post, but I do have some if anyone is curious.
Hope this helps someones workflow.
Cheers!
